What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You can use this guide to achieve that: http://www.jotform.com/help/203-How-to-Auto-popup-a-Lightbox-Form
Adjust the width and height appropriately.
This is also a good article to walk you through the fundamentals: http://www.jotform.com/help/220-How-to-Create-a-Lightbox-Form
Please let us know how we can assist further.
Yes, I was able to create the lightbox, but it's not working correctly in the mobile platform (iPhone, etc.). How do I make it mobile friendly, while still being wider than 300px?
Please create a separate new thread for your inquiry. Use this link http://www.jotform.com/contact/
This way we can attend to your concern properly.
You may just copy your message from here and paste it on the new topic you will create. Just add your appropriate title/subject to it.
I also suggest you include the URL of your website on your message where we can check the embedded lightbox form.